Some causes of the super rainstorm occurred in Xinxiang,Zhengzhou,Kaifeng and Xuchang etc. from July 5th to July 6th in 2000 is analysed by using the observations of 714CD Doppler Weather Radar in Zhengzhou together with the hourly surface rainfall,wind data,soundings of Zhengzhou and area map of Henan. It is revealed that the super rainstorm process has typical character of mesoscale disturbance and severe convection.